TiTle： 

Preparation of tin oxide particles using tin-contained organic substance of dioctyltin oxide as the starting material by a calcination method

Keqiang Ding*, Jingwei Han , Xiaojing Gao, Lanjun Zhou, Runling Qu

College of Chemistry and Materials Science

Hebei Normal University, Shijiazhuang, Hebei 050024, P.R. China

Abstract: 

For the first time, erect and flaky particles of tin oxides (SnO₂), as anode materials for lithium ion batteries (LIBs), were prepared by a calcination method using dioctyltin oxide as the starting material. The samples calcined at 300, 500 and 700oC under the air conditions were nominated as sample a, b and c, respectively. And the sample calcined at 500oC under the N₂ atmosphere was labeled as sample b₁. The obtained XRD patterns strongly indicated that tin oxides were the main components of all prepared samples. Also, in all synthesized samples, erect and flaky particles were distinctly observed by SEM. More importantly, the initial discharge capacities of sample a, b, c and b₁ at 100 mA g^-1, revealed by the galvanostatic charge-discharge measurements, were 829, 885, 815 and 729 mAh g^-1, respectively. And after 20 cycles, besides sample a, the discharge capacities at 100 mA g^-1 of sample b, c and b₁ were all higher than 300 mAh g^-1, showing acceptable electrochemical performance. A novel way, i.e., calcining the Sn-contained organic substance of dioctyltin oxide to prepare tin oxides anode materials for LIBs, was developed in this preliminary work, which has opened up a new avenue for producing metal oxides based anode materials for LIBs. 

Highlights

►     Calcining dioctyltin oxide can produce tin oxide anode materials for LIBs.

►     Erect and flaky particles of tin oxides were prepared.

►     The discharge capacities of all samples were higher than 240 mAh g^-1 after 20 cycles.

Accepted for publication at  https://doi.org/10.1016/j.matchemphys.2019.04.091